Mineral In A Matrix (Likely Quartz Or Feldspar)

Ocean Jasper

Orbicular Jasper/Microcrystalline Quartz (SiO2)

Quartzite Cobble

Metamorphosed Quartz Sandstone (primarily SiO2)

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic volcanic rock)

Green Fuchsite in Quartz (sometimes called Green Aventurine)

Fuchsite (Chrome-rich Muscovite) K(Al,Cr)2(AlSi3O10)(OH)2 in Quartz SiO2

Quartz in Matrix (possibly with Biotite or Hornblende)

Quartz (Silicon Dioxide, SiO2) in Granitic Matrix

Phantom Quartz with Chlorite and Hematite inclusions

Silicon Dioxide (SiO2) with inclusions of Chlorite group minerals and Hematite (Fe2O3)

Dalmatian Stone (often called Dalmatian Jasper)

Peralkaline Quartz-Feldspar Rock with Arfvedsonite (formerly believed to be Jasper)

Quartz (specifically Clear Quartz with iron/hematite staining)

Silicon Dioxide (SiO2)

Sandstone

Arenite (SiO2-rich)

Yellow Quartz (Citrine Quartz Pebble)

Silicon Dioxide (SiO2)

Sedimentary Breccia

Breccia (Clastic Sedimentary Rock)

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Chalcopyrite in Matrix

Chalcopyrite (CuFeS2)

Granite Pebble

Granite (composed primarily of Quartz, Feldspar, and Mica)

Strawberry Quartz

Quartz (SiO2) with inclusions of Goethite or Hematite

Pink Granite

Phaneritic Felsic Igneous Rock (Granite)

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Sandstone (likely Calcareous or Quartz-rich)

Arenite (SiO2 based typically)

Granite

Granite

Red Granite

Felsic Plutonic Rock (Granite)

Granite

Phaneritic Plutonic Felsic Rock (KAlSi3O8 + SiO2 + NaAlSi3O8)

Fossiliferous Limestone

Biogenic Limestone (Calcium Carbonate, CaCO3)

Rough Quartz (Milky Quartz Pebbles)

Silicon Dioxide (SiO2)

Diorite (Salt and Pepper Rock)

Diorite

Granitic Pegmatite

Phaneritic Granite with Potassium Feldspar (KAlSi3O8), Quartz (SiO2), and Plagioclase

Quartz Pebble

Silicon Dioxide (SiO2)

Gneiss

Gneiss (High-grade regional metamorphic rock)

Sandstone (Quartzose Sandstone)

Arenite (primarily SiO2)

Sandstone (Stream-rounded)

Arenite (SiO2 based)

Banded Gneiss

Gneiss (pronounced 'nice')

Sunstone

Oligoclase (Plagioclase Feldspar) with inclusions - (Ca, Na)((Al, Si)4O8)

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Milky Quartz with Iron Staining

Quartz (Silicon Dioxide - SiO2)

Gneiss

Metamorphic rock of high-grade regional metamorphism

Unakite

Epidotized Granite

Unakite

Epidotized Granite (SiO2, KAlSi3O8, Ca2(Al, Fe)3(SiO4)3(OH))

Sandstone with Quartz Veining

Arenite with hydrothermal quartz (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (Orangey-white variety)

Silicon Dioxide (SiO2)

Decomposed Granite

Grano-diorite/Granite-residuum (SiO2 primary)

Granite Cobble

Phaneritic Felsic Igneous Rock (Granite)